Pencil



W. K. HOLMES.

PENCIL.

APPLICATION FILED MAY 8,1919.

Patented Nov. 11, 19m,

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ITIVESSES v WILLIAM K. HOLMES, 0F IBROOICLYN, NEW YORK.

PENCIL.

rechtse. 1

Specification of Letters Patent.

Patented NOV., 11, 1919.

Application led May 8, 1919. Serial No. 295,654.

rllhe primary lobject of the present inventionis to provide a device of this character in which the several parts which serve to make up an operative structure may be readil and easily assembled.

A urther object of the invention is to provide a device which is simple in construction and cheap of manufacture.

With theabove and other objects in view which will appear as the nature of the invention is better understood, reference is had to the accompanying drawings in which- Figure 1 is a longitudinal sectional view of the pencil;

lFi 2 is a similar view with the pencil barre removed;

Fig. 3 is a view in elevation of the complete pencil; n

lFio: 4 is a transverse sectional view on the line 4 4 of Fig. 1.

Referring more particularly to the drawings, the reference character 5 designates a pencil barrel, the forward end of which is tapered as at 6, and terminates in a small substantially circular opening 7.

Mounted within the barrel 5 of the pencil, is a sleeve 8, the rear end of which is provided 'with an inturned annular flange 9. Secured within the sleeve 8 is a screw member 10, said screw member beinfr formed by suitably coiling a strip of rigid wire. This screw. member 10 is secured within the sleeve 8 by means of solder 11,

which projects through an opening 12 in the secured within the free end of the screw member 10. This lead-holder is formed of resilient. metal and has its lead-carrying extensions 14 provided with oppositely-disposed cut-out portions by means of which resiliency is obtained.

Mounted in the rear of the barrel 5 and provided with a flange 15, which underlies the flange 19 of the sleeve 8, is a sleeve 16. The rear edge of the sleeve 16 projects beyond the rear end of the barrel 5, as at 17, said sleeve 16 being provided on its inner face with a projection 18, which is adapted for reciprocating movement in a slot 19 formed in an internal sleeve 20. Secured to the interior of the sleeve 20, near its forward end in any suitable manner, as at 21, is a lead-engaging and projecting member 22, and said lead-engaging member 22 is olfset, as at 23, in order that it may be in alinement with the opening 24 through the body portion 13 of the resilient lead-holder 13. This internal sleeve 20 is further provided with a projection 25, which is adapted to engage'the screw member 10 between thel convolutions thereof in such a manner that when the internal sleeve 2() is rotated in amanner to be hereinafter described, the same is fed longitudinally of the sleeve 16, at the same time feeding .the lead-pushing member 22 longitudinally of the leadholder 14.

The-sleeve 16 is provided with a plurality of longitudinally extending channels 26, which are spaced 'from each other by intervening shoulders 27, and adapted to engage with said sleeve is an operating knob 28, which latter is provided with a recess 29. The side walls of the recess 29 are-'formed in the same manner as the sleeve 16, and its channels are adapted for receiving the shoulders 27 of said sleeve to rotate the latter upon rotation of the operating knob 28. The sleeve 16 is further provided with an annular' internal shoulder 30, which is formed by crimping said sleeve as at 31, and positioned on said shoulder is a plate 32, which forms the bottom of a receptacle for the leads 33, as shown in Fig. 1, the leads being inserted into the open end of the cylinder 16 to a position where they will rest upon the plate 32.

In assembling the several parts, the screw member 10 is secured to the lead-holder 13 by solder or other suitable means. After this has been done, the sleeve 16 with the forward end of the lead pusher 22 engaging in the longitudinal passage of the leadholder 13, is positioned with its projection in engagement with the first convolution of the screw member 10. The sleeve 8 is now passed over the screw member 10, with the flange 15 of the sleeve-16 engaging behind the flange 9 thereof, and the sleeve 16 is turned until its projection 18 engages in the slot 19 of the sleeve 20.

With the parts in this position, theyare placed within the barrel 5, with the leadholder 13 in engagement with the interior face of the tapered portion 6 thereof. Heat is now applied to the barrelat a point opposite the solder 11, which fuses said solder for securing the sleeve 8 and the screw member 10 against rotationvrelative to the barrel 5. The operating knob 28 is now positioned in the end of the barrel with its shoulders inengagement with the channels 26 of the sleeve 16, said operating knob being retained in the barrel by means of friction-al engagement therewith.

Having thus described the construction and assembly of the device, its operation is as follows: A suitable lead is positioned in the lead-holder 13, through the tapered end of the barrel 5, and is moved therein until its inner end engages the lead-pushing member 22. If, now, the operating knob 28 -be grasped by the hand right and turned in a clockwise direction, yit will be apparent that the sleeve 20 owing to its projection 25 engaging between the convolutions of the screw member 10, will be fed forward, the lead-pushing element 22 being simultaneously moved` longitudinally of .the leadholder 14 for projecting the lead from the end of the barrel.

When it is desired to retract the lead by positioning the same within the barrel 5, the operating knob is turned in 'an anticlockwise direction to retract the lead-pushing member 22. After this lead-pushing member 22V has been sufficiently retracted, the lead may be forced longitudinally of the lead-holder 14 to a position wholly within the barrel.

Having thusdescribed the invention, what lis claimed as new is:

1. A pencil comprising a barrel having one of its ends tapered and provided with an opening, a sleeve secured in said barrel, a screwv carried Iby said sleeve, and projecting forwardly fromone end thereof, a

lsecond sleeve mounted Within the first-mentioned sleeve and rotatable with respect thereto, a slotted sleeve movable longitudinally of said rotating sleeve, means carried by said rotating sleeve and engaging in said slot for preventing rotating movement of said slotted sleeve relative to the rotating sleeve, a lead-holder carried by said screw, and lead-pushing means carried by said sliding sleeve and projecting into said leadliolder.

2. A pencil comprising a barrel, a flanged sleeve rigidly secured to the barrel on the interior thereof, a. screw immovably secured to the barrel within said sleeve, a lead-holder rigidly secured to said screw and spaced from one end of said sleeve, a second sleeve rotatably mounted with respect to said flanged sleeve, a third sleeve carried by said rotating sleeve and having inter-engagement with said screw, and-means carried by said third sleeve formoving a lead longitudinally of the le-ad-holder.

3. A pencil comprising a barrel, a' sleeve immovably secured to said barrel on the interior' thereof, a screw mounted within said sleeve and immovably secured with respect thereto, a lead-holder carried by said screw,

`a second sleeve rotatable within the firstmentioned sleeve, a third sleeve mounted within said rotatable sleeve and rotatable therewith, means carried by said third-mentioned sleeve for-inter-engagement with said screw, and means carried by said third-inentioned sleeve and movable longitudinally of the lead-holder upon rotation of said sleeve for projecting the lead therefrom.

4. A pencil comprising a barrel, a flanged sleeve immovably secured within the barrel, a screw immovably secured interiorly of said flanged sleeve, a second flaiwed sleeve rotatably mounted in said first-mentioned flanged sleeve, a lead-holder carried by said screw, a lead-pushing element, and means carried by the first-mentioned flanged sleeve for advancing and retracting the lead-pushing element upon rotation of the secondmentioned flanged sleeve within the firstmentioned flanged sleeve.

5. A pencil comprising a barrel, a flanged sleeve immovably secured within said barrel, a screw immovably secured within said flanged sleeve and projecting from one end thereof, a lead-holder carried by the pro-V jecting end of said screw and engaging said barrel, a second sleeve, a flange on the said second sleeve engaging behind the flange of the first-mentioned sleeve for providing means for rotatably mounting said secondmentioned sleeve, a third sleeve rotatable with said second-mentioned flanged sleeve, a leadpushing member immovably secured with respect to the third-mentioned sleeve and having its free end operating in the lead-holder, and means for rotating the second-mentioned flanged sleeve for operating the lead-pushing member longitudinally of the lead-holder'substantially as described.

'6. A pencil comprisin a barrel, a sleeve immovably secured to t e interior of said bariel, a screw immovably secured to said barrel on the interior of said immovable sleeve, a lead-holder carried by said screw, a second sleeve rotatably mounted in said "immovable sleeve, a third sleeve rotatable Iwith said second-mentioned sleeve and slidably mounted therein, a lead-pusher carried 'by said slidable sleeve and projected into said Alead-holder, and means integral with said slidable sleeve for e screw for movin the lea -pusher longitudinally of the lea -holder in either direction upon rotation of said rotating sleeve.

7. A pencil comprising a barrel, a: screw rigidly carried by said barrel, a lead-holder `carried by said screw, a sleeve rotatably agement with said mounted in said barrel and projecting from the rear end thereof,a shorter sleeve rotatable with and slidably mounted on the interior of said rotating` sleeve, a lead-pusher rigidly secured at one end to Asaid sliding sleeve, and means integral with said sliding -sleeve and adapted' for inter-engagement with said screw for moving the lead-pusher longitudinally in either direction of the leadholdelvupon rotation of said rotatable sleeve.

WILLIAM K. HOLMES'. 

